body {
    background-color: #ffffff;
}

.top {
    width: 100%;
    box-sizing: border-box;
    padding: .25rem .4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #43D170;
}

.top_left a img {
    width: 2rem;
}

.top_right img {
    width: .4rem;
}

/*  */
.nav {
    position: absolute;
    z-index: 5;
    background-color: #15973E;
    box-sizing: border-box;
    padding: 0 0 2rem 0;
    box-sizing: border-box;
    width: 2.6rem;
    right: 0;
    display: none;
}

.nav ul li {
    border-bottom: 1px solid #4FB16E;
    color: #CBE4D2;
    font-size: .25rem;
    padding: .3rem;
}

.nav ul li a {
    color: #CBE4D2;
    display: block;
    width: 100%;
}

/*  */
.img {
    width: 100%;
    box-sizing: border-box;
    padding: .25rem .4rem;
    padding-top: 0.5rem;
    background-color: #43D170;
}

.img img {
    width: 100%;
}

/*  */
.download{
    width: 65%;
    box-sizing: border-box;
    margin:.5rem auto;
}
.download img{
    width: 100%;
}
.download_img{
    width: 65%;
    box-sizing: border-box;
    margin: auto;
}
.download_img img{
    width: 100%;
}

.main{
    width: 65%;
    box-sizing: border-box;
    margin: auto;
    margin-bottom: 1rem;
}
.main_box{
    width: 100%;
    box-sizing: border-box;
    background-color: #43D170;
    padding: .2rem;
    border-radius: 5px;
    display: flex;
    align-items: center;
    margin-top: .5rem;
    justify-content: center;
}
.main_box a{
    display: block;
    width: 100%;
    display: flex;
    align-items: center;
    box-sizing: border-box;
    justify-content: center;
}
.main_box_left img{
    width: .8rem;
    margin-right: .3rem;
}
.main_box_right p:nth-child(1){
    color: #fff;
    font-size: .23rm;
}
.main_box_right p:nth-child(2){
    color: #fff;
    font-size: .3rem;
    font-weight: bold;
    margin-top: .2rem;
}